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Voice reveals brain health and dementia
A recent study has revealed that the way a person speaks can provide indicators that go beyond their actual age. Specifically, the appearance of a voice that sounds older than the person's true age is associated with signs of accelerated aging and brain changes, including Alzheimer's disease and dementia. The study relied on a computer system that uses machine learning to analyze speech features and estimate a "vocal age." It showed that healthy individuals exhibit a smaller difference between their vocal age and actual age, while this gap increases in those with dementia and Alzheimer's. Additionally, an older-sounding voice was linked to higher levels of the protein p-Tau217 in the blood, a biomarker associated with dementia, and poorer performance in memory and concentration tests. These findings represent a step toward using voice analysis as a non-invasive, low-cost method to monitor early signs of aging. However, they do not currently provide a definitive diagnosis of dementia.
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